fanchaoting 5a12cca697 umount oops when remove blocklayoutdriver first ...

now pnfs client uses block layout, maybe we can remove
blocklayoutdriver first. if we umount later,
it can cause oops in unset_pnfs_layoutdriver.
because nfss->pnfs_curr_ld->clear_layoutdriver is invalid.

reproduce it:
 modprobe  blocklayoutdriver
 mount -t nfs4 -o minorversion=1 pnfsip:/ /mnt/
 rmmod blocklayoutdriver
 umount /mnt

then you can see following

CPU 0
Pid: 17023, comm: umount.nfs4 Tainted: GF          O 3.7.0-rc6-pnfs #1 VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform
RIP: 0010:[<ffffffffa04cfe6d>]  [<ffffffffa04cfe6d>] unset_pnfs_layoutdriver+0x1d/0x70 [nfsv4]
RSP: 0018:ffff8800022d9e48  EFLAGS: 00010286
RAX: ffffffffa04a1b00 RBX: ffff88000b013800 RCX: 0000000000000001
RDX: ffffffff81ae8ee0 RSI: ffff880001ee94b8 RDI: ffff88000b013800
RBP: ffff8800022d9e58 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff880001ee9400
R13: ffff8800105978c0 R14: 00007fff25846c08 R15: 0000000001bba550
FS:  00007f45ae7f0700(0000) GS:ffff880012c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: ffffffffa04a1b38 CR3: 0000000002c0c000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process umount.nfs4 (pid: 17023, threadinfo ffff8800022d8000, task ffff880006e48aa0)
Stack:
ffff8800105978c0 ffff88000b013800 ffff8800022d9e78 ffffffffa04cd0ce
ffff8800022d9e78 ffff88000b013800 ffff8800022d9ea8 ffffffffa04755a7
ffff8800022d9ea8 ffff880002f96400 ffff88000b013800 ffff880002f96400
Call Trace:
[<ffffffffa04cd0ce>] nfs4_destroy_server+0x1e/0x30 [nfsv4]
[<ffffffffa04755a7>] nfs_free_server+0xb7/0x150 [nfs]
[<ffffffffa047d4d5>] nfs_kill_super+0x35/0x40 [nfs]
[<ffffffff81178d35>] deactivate_locked_super+0x45/0x70
[<ffffffff8117986a>] deactivate_super+0x4a/0x70
[<ffffffff81193ee2>] mntput_no_expire+0xd2/0x130
[<ffffffff81194d62>] sys_umount+0x72/0xe0
[<ffffffff8154af59>] system_call_fastpath+0x16/0x1b
Code: 06 e1 b8 ea ff ff ff eb 9e 0f 1f 44 00 00 55 48 89 e5 53 48 83 ec 08 66 66 66 66 90 48 8b 87 80 03 00 00 48 89 fb 48 85 c0 74 29 <48> 8b 40 38 48 85 c0 74 02 ff d0 48 8b 03 3e ff 48 04 0f 94 c2
RIP  [<ffffffffa04cfe6d>] unset_pnfs_layoutdriver+0x1d/0x70 [nfsv4]
RSP <ffff8800022d9e48>
CR2: ffffffffa04a1b38
---[ end trace 29f75aaedda058bf ]---

Signed-off-by: fanchaoting<fanchaoting@cn.fujitsu.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org

2013-02-17 15:40:15 -05:00

..

9p

The following changes since commit 4cbe5a555fa58a79b6ecbb6c531b8bab0650778d:

2012-10-12 09:59:23 +09:00

adfs

adfs: drop vmtruncate

2012-12-20 14:00:01 -05:00

affs

affs: drop vmtruncate

2012-12-20 14:00:01 -05:00

afs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-10-02 20:25:04 -07:00

autofs4

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2012-12-17 15:44:47 -08:00

befs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-10-02 20:25:04 -07:00

bfs

bfs: drop vmtruncate

2012-12-20 14:00:01 -05:00

btrfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

2013-01-25 10:55:21 -08:00

cachefiles

FS-Cache: Mark cancellation of in-progress operation

2012-12-20 22:34:00 +00:00

ceph

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

2012-12-20 14:00:13 -08:00

cifs

fs/cifs/cifs_dfs_ref.c: fix potential memory leakage

2013-01-22 23:58:16 -06:00

coda

fs: push rcu_barrier() from deactivate_locked_super() to filesystems

2012-10-02 21:35:55 -04:00

configfs

lseek: the "whence" argument is called "whence"

2012-12-17 17:15:12 -08:00

cramfs

userns: Convert cramfs to use kuid/kgid where appropriate

2012-09-21 03:13:08 -07:00

debugfs

debugfs: convert gid= argument from decimal, not octal

2013-01-11 05:56:01 -08:00

devpts

TTY: devpts, document devpts inode operations

2012-10-22 16:50:13 -07:00

dlm

dlm: fix lvb invalidation conditions

2012-11-16 11:20:42 -06:00

ecryptfs

fs/ecryptfs/crypto.c: make ecryptfs_encode_for_filename() static

2012-12-18 10:10:13 -06:00

efs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-10-02 20:25:04 -07:00

exofs

exofs: don't leak io_state and pages on read error

2012-12-14 12:17:32 +02:00

exportfs

Merge branch 'for-3.8' of git://linux-nfs.org/~bfields/linux

2012-12-20 14:04:11 -08:00

ext2

ext2: fix return values on parse_options() failure

2012-10-09 23:23:53 +02:00

ext3

lseek: the "whence" argument is called "whence"

2012-12-17 17:15:12 -08:00

ext4

ext4: remove duplicate call to ext4_bread() in ext4_init_new_dir()

2013-01-06 23:40:25 -05:00

f2fs

f2fs: use _safe() version of list_for_each

2013-01-22 10:49:00 +09:00

fat

fat: fix incorrect function comment

2012-12-20 17:40:20 -08:00

freevxfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-10-02 20:25:04 -07:00

fscache

FS-Cache: Clear remaining page count on retrieval cancellation

2012-12-20 22:35:15 +00:00

fuse

fuse: remove unused variable in fuse_try_move_page()

2013-01-17 13:09:59 +01:00

gfs2

GFS2: fix skip unlock condition

2013-01-28 09:49:15 +00:00

hfs

hfs: drop vmtruncate

2012-12-20 14:00:01 -05:00

hfsplus

Merge branch 'akpm' (Andrew's patch-bomb)

2012-12-20 20:00:43 -08:00

hostfs

Merge branch 'for-linus-37rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml

2012-10-10 11:15:20 +09:00

hpfs

hpfs: drop vmtruncate

2012-12-20 18:40:00 -05:00

hppfs

pidns: Use task_active_pid_ns where appropriate

2012-11-19 05:59:09 -08:00

hugetlbfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2012-12-13 12:00:02 -08:00

isofs

tmpfs,ceph,gfs2,isofs,reiserfs,xfs: fix fh_len checking

2012-10-09 23:33:55 -04:00

jbd

jbd: don't wake kjournald unnecessarily

2013-01-14 22:50:45 +01:00

jbd2

Various bug fixes for ext4. Perhaps the most serious bug fixed is one

2013-01-02 09:57:34 -08:00

jffs2

jffs2: hold erase_completion_lock on exit

2012-11-18 11:59:01 +02:00

jfs

jfs: drop vmtruncate

2012-12-20 18:40:52 -05:00

lockd

lockd: Remove BUG_ON()s from fs/lockd/clntproc.c

2012-11-04 14:43:40 -05:00

logfs

logfs: drop vmtruncate

2012-12-20 18:40:53 -05:00

minix

minix: drop vmtruncate

2012-12-20 18:40:53 -05:00

ncpfs

ncpfs: drop vmtruncate

2012-12-20 18:40:54 -05:00

nfs

umount oops when remove blocklayoutdriver first

2013-02-17 15:40:15 -05:00

nfs_common

…

nfsd

Revert "nfsd: warn on odd reply state in nfsd_vfs_read"

2012-12-21 17:07:45 -08:00

nilfs2

nilfs2: drop vmtruncate

2012-12-20 18:40:54 -05:00

nls

nls: fix (and rename) mac NLS table files and config options

2012-06-01 19:51:22 -07:00

notify

Merge branch 'for-next' of git://git.infradead.org/users/eparis/notify

2012-12-20 20:11:52 -08:00

ntfs

ntfs: drop vmtruncate

2012-12-20 18:40:55 -05:00

ocfs2

ocfs2: drop vmtruncate

2012-12-20 14:00:01 -05:00

omfs

omfs: drop vmtruncate

2012-12-20 14:00:01 -05:00

openpromfs

fs: push rcu_barrier() from deactivate_locked_super() to filesystems

2012-10-02 21:35:55 -04:00

proc

mempolicy: remove arg from mpol_parse_str, mpol_to_str

2013-01-02 09:27:10 -08:00

pstore

pstore: remove __dev* attributes.

2013-01-03 15:57:14 -08:00

qnx4

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-10-02 20:25:04 -07:00

qnx6

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-10-02 20:25:04 -07:00

quota

quota: Use the pre-processor to compile out quotactl_cmd_write when !CONFIG_BLOCK

2012-12-13 16:33:24 +01:00

ramfs

don't pass nameidata to ->create()

2012-07-14 16:34:47 +04:00

reiserfs

reiserfs: drop vmtruncate

2012-12-20 14:00:01 -05:00

romfs

fs: push rcu_barrier() from deactivate_locked_super() to filesystems

2012-10-02 21:35:55 -04:00

squashfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-10-02 20:25:04 -07:00

sysfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2012-12-17 15:44:47 -08:00

sysv

sysv: drop vmtruncate

2012-12-20 14:00:01 -05:00

ubifs

ubifs: use prandom_bytes

2012-12-17 17:15:26 -08:00

udf

UDF: Fix a null pointer dereference in udf_sb_free_partitions

2013-01-14 22:53:47 +01:00

ufs

ufs: drop vmtruncate

2012-12-20 14:00:01 -05:00

xfs

xfs: Fix xfs_swap_extents() after removal of xfs_flushinval_pages()

2013-01-28 16:05:10 -06:00

aio.c

aio: now fput() is OK from interrupt context; get rid of manual delayed __fput()

2012-07-22 23:57:59 +04:00

anon_inodes.c

…

attr.c

userns: Allow chown and setgid preservation

2012-11-20 04:17:24 -08:00

bad_inode.c

lseek: the "whence" argument is called "whence"

2012-12-17 17:15:12 -08:00

binfmt_aout.c

get rid of pt_regs argument of ->load_binary()

2012-11-28 21:53:38 -05:00

binfmt_elf_fdpic.c

get rid of pt_regs argument of ->load_binary()

2012-11-28 21:53:38 -05:00

binfmt_elf.c

binfmt_elf: fix corner case kfree of uninitialized data

2012-12-17 17:15:19 -08:00

binfmt_em86.c

exec: use -ELOOP for max recursion depth

2012-12-17 17:15:23 -08:00

binfmt_flat.c

get rid of pt_regs argument of ->load_binary()

2012-11-28 21:53:38 -05:00

binfmt_misc.c

exec: do not leave bprm->interp on stack

2012-12-20 17:40:19 -08:00

binfmt_script.c

exec: do not leave bprm->interp on stack

2012-12-20 17:40:19 -08:00

binfmt_som.c

get rid of pt_regs argument of ->load_binary()

2012-11-28 21:53:38 -05:00

bio-integrity.c

block: Ues bi_pool for bio_integrity_alloc()

2012-09-09 10:35:38 +02:00

bio.c

vfs: fix: don't increase bio_slab_max if krealloc() fails

2012-10-22 22:00:26 +02:00

block_dev.c

lseek: the "whence" argument is called "whence"

2012-12-17 17:15:12 -08:00

buffer.c

vfs: add missing virtual cache flush after editing partial pages

2013-01-14 13:17:50 -08:00

char_dev.c

char_dev: pin parent kobject

2012-10-22 08:50:37 +03:00

compat_binfmt_elf.c

coredump: extend core dump note section to contain file names of mapped files

2012-10-06 03:05:17 +09:00

compat_ioctl.c

Merge 3.7-rc3 into tty-next

2012-10-29 09:00:57 -07:00

compat.c

vfs: define struct filename and have getname() return it

2012-10-12 20:14:55 -04:00

coredump.c

do_coredump(): get rid of pt_regs argument

2012-11-29 00:01:25 -05:00

coredump.h

coredump: update coredump-related headers

2012-10-06 03:05:15 +09:00

dcache.c

vfs: d_obtain_alias() needs to use "/" as default name.

2012-12-20 18:49:10 -05:00

dcookies.c

…

direct-io.c

direct-io: don't read inode->i_blkbits multiple times

2012-11-29 12:38:44 -08:00

drop_caches.c

…

eventfd.c

fs, eventfd: add procfs fdinfo helper

2012-12-17 17:15:27 -08:00

eventpoll.c

epoll: prevent missed events on EPOLL_CTL_MOD

2013-01-02 09:16:43 -08:00

exec.c

fs/exec.c: work around icc miscompilation

2013-01-11 14:54:55 -08:00

fcntl.c

Fix F_DUPFD_CLOEXEC breakage

2012-10-09 15:52:31 +09:00

fhandle.c

Merge branch 'for-3.8' of git://linux-nfs.org/~bfields/linux

2012-12-20 14:04:11 -08:00

fifo.c

fifo: Do not restart open() if it already found a partner

2012-07-16 08:33:14 -07:00

file_table.c

fs: Fix imbalance in freeze protection in mark_files_ro()

2012-12-20 13:57:36 -05:00

file.c

misc: remove __dev* attributes.

2013-01-03 15:57:16 -08:00

filesystems.c

vfs: define struct filename and have getname() return it

2012-10-12 20:14:55 -04:00

fs_struct.c

kill daemonize()

2012-11-28 21:49:02 -05:00

fs-writeback.c

writeback: fix a typo in comment

2012-12-12 17:38:34 -08:00

generic_acl.c

userns: Pass a userns parameter into posix_acl_to_xattr and posix_acl_from_xattr

2012-09-18 01:01:35 -07:00

inode.c

mm: redefine address_space.assoc_mapping

2012-12-11 17:22:26 -08:00

internal.h

writeback: put unused inodes to LRU after writeback completion

2012-11-26 17:41:24 -08:00

ioctl.c

switch simple cases of fget_light to fdget

2012-09-26 22:20:08 -04:00

ioprio.c

…

Kconfig

fuse: Move CUSE Kconfig entry from fs/Kconfig into fs/fuse/Kconfig

2013-01-17 13:08:45 +01:00

Kconfig.binfmt

coredump: make core dump functionality optional

2012-10-06 03:05:15 +09:00

libfs.c

vfs: drop vmtruncate

2012-12-20 18:46:29 -05:00

locks.c

UAPI Disintegration 2012-10-09

2012-10-09 18:35:22 -04:00

Makefile

f2fs: update Kconfig and Makefile

2012-12-11 13:43:42 +09:00

mbcache.c

…

mount.h

proc: Usable inode numbers for the namespace file descriptors.

2012-11-20 04:19:49 -08:00

mpage.c

…

namei.c

vfs: fix renameat to retry on ESTALE errors

2012-12-20 18:50:05 -05:00

namespace.c

vfs, freeze: use ACCESS_ONCE() to guard access to ->mnt_flags

2012-12-20 13:36:18 -05:00

no-block.c

…

open.c

vfs: make fchownat retry once on ESTALE errors

2012-12-20 18:50:07 -05:00

pipe.c

pipe(2) - race-free error recovery

2012-09-26 21:08:52 -04:00

pnode.c

VFS: Make clone_mnt()/copy_tree()/collect_mounts() return errors

2012-07-14 16:37:27 +04:00

pnode.h

vfs: Only support slave subtrees across different user namespaces

2012-11-19 05:59:20 -08:00

posix_acl.c

userns: Convert vfs posix_acl support to use kuids and kgids

2012-09-18 01:01:35 -07:00

proc_namespace.c

get rid of magic in proc_namespace.c

2012-07-14 16:32:48 +04:00

read_write.c

sendfile: allows bypassing of notifier events

2012-12-20 17:40:21 -08:00

read_write.h

compat: fs: Generic compat_sys_sendfile implementation

2012-10-02 21:35:55 -04:00

readdir.c

switch simple cases of fget_light to fdget

2012-09-26 22:20:08 -04:00

select.c

switch simple cases of fget_light to fdget

2012-09-26 22:20:08 -04:00

seq_file.c

seq_file: fix new kernel-doc warnings

2013-01-10 14:35:24 -08:00

signalfd.c

fs, epoll: add procfs fdinfo helper

2012-12-17 17:15:27 -08:00

splice.c

tcp: fix MSG_SENDPAGE_NOTLAST logic

2013-01-06 20:58:13 -08:00

stack.c

…

stat.c

vfs: fix readlinkat to retry on ESTALE

2012-12-20 18:50:01 -05:00

statfs.c

vfs: fix user_statfs to retry once on ESTALE errors

2012-12-20 18:50:07 -05:00

super.c

vfs: drop lock/unlock super

2012-10-09 23:33:39 -04:00

sync.c

switch simple cases of fget_light to fdget

2012-09-26 22:20:08 -04:00

timerfd.c

switch simple cases of fget_light to fdget

2012-09-26 22:20:08 -04:00

utimes.c

vfs: allow utimensat() calls to retry once on an ESTALE error

2012-12-20 18:50:08 -05:00

xattr_acl.c

userns: Fix posix_acl_file_xattr_userns gid conversion

2012-10-12 13:16:48 -07:00

xattr.c

vfs: make lremovexattr retry once on ESTALE error

2012-12-20 18:50:11 -05:00